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Message-Id: <20240925210615.2572360-4-arnd@kernel.org> Date: Wed, 25 Sep 2024 21:06:13 +0000 From: Arnd Bergmann <arnd@...nel.org> To: linux-mm@...ck.org Cc: Arnd Bergmann <arnd@...db.de>, "Jason A. Donenfeld" <Jason@...c4.com>, Alexander Viro <viro@...iv.linux.org.uk>, Alexandre Torgue <alexandre.torgue@...s.st.com>, Andreas Larsson <andreas@...sler.com>, Andrew Morton <akpm@...ux-foundation.org>, Ard Biesheuvel <ardb@...nel.org>, Christian Brauner <brauner@...nel.org>, Christoph Hellwig <hch@....de>, Christophe Leroy <christophe.leroy@...roup.eu>, Damien Le Moal <dlemoal@...nel.org>, David Hildenbrand <david@...hat.com>, Greg Ungerer <gerg@...ux-m68k.org>, Helge Deller <deller@....de>, Kees Cook <kees@...nel.org>, "Liam R . Howlett" <Liam.Howlett@...cle.com>, Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, Matt Turner <mattst88@...il.com>, Max Filippov <jcmvbkbc@...il.com>, Michael Ellerman <mpe@...erman.id.au>, Michal Hocko <mhocko@...e.com>, Nicholas Piggin <npiggin@...il.com>, Richard Henderson <richard.henderson@...aro.org>, Thomas Bogendoerfer <tsbogend@...ha.franken.de>, Vladimir Murzin <vladimir.murzin@....com>, Vlastimil Babka <vbabka@...e.cz>, linux-stm32@...md-mailman.stormreply.com, linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, linux-arch@...r.kernel.org Subject: [PATCH 3/5] asm-generic: use asm-generic/mman-common.h on mips and xtensa From: Arnd Bergmann <arnd@...db.de> mips and xtensa have almost the same asm/mman.h, aside from an unintentional difference in MAP_UNINITIALIZED that has no effect in practice. Now that the MAP_* flags are moved out of asm-generic/mman-common.h, the only difference from the its contents and the mips/xtensa version is the PROT_SEM definition that is one bit off from the rest. Make the generic PROT_SEM definition conditional on it already being defined and then include that header from both architectures, to remove the bulk of the contents. Signed-off-by: Arnd Bergmann <arnd@...db.de> --- arch/alpha/include/uapi/asm/mman.h | 2 + arch/mips/include/uapi/asm/mman.h | 65 +------------------------ arch/parisc/include/uapi/asm/mman.h | 3 ++ arch/xtensa/include/uapi/asm/mman.h | 66 +------------------------- include/uapi/asm-generic/mman-common.h | 2 + 5 files changed, 9 insertions(+), 129 deletions(-) diff --git a/arch/alpha/include/uapi/asm/mman.h b/arch/alpha/include/uapi/asm/mman.h index 8946a13ce858..1f1c03c047ce 100644 --- a/arch/alpha/include/uapi/asm/mman.h +++ b/arch/alpha/include/uapi/asm/mman.h @@ -5,7 +5,9 @@ #define PROT_READ 0x1 /* page can be read */ #define PROT_WRITE 0x2 /* page can be written */ #define PROT_EXEC 0x4 /* page can be executed */ +#ifndef PROT_SEM /* different on mips and xtensa */ #define PROT_SEM 0x8 /* page may be used for atomic ops */ +#endif /* 0x10 reserved for arch-specific use */ /* 0x20 reserved for arch-specific use */ #define PROT_NONE 0x0 /* page can not be accessed */ diff --git a/arch/mips/include/uapi/asm/mman.h b/arch/mips/include/uapi/asm/mman.h index 399937cefaa6..6deb62db90de 100644 --- a/arch/mips/include/uapi/asm/mman.h +++ b/arch/mips/include/uapi/asm/mman.h @@ -9,15 +9,8 @@ #ifndef _ASM_MMAN_H #define _ASM_MMAN_H -#define PROT_READ 0x1 /* page can be read */ -#define PROT_WRITE 0x2 /* page can be written */ -#define PROT_EXEC 0x4 /* page can be executed */ /* 0x8 reserved for PROT_EXEC_NOFLUSH */ #define PROT_SEM 0x10 /* page may be used for atomic ops */ -/* 0x20 reserved for arch-specific use */ -#define PROT_NONE 0x0 /* page can not be accessed */ -#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ -#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */ /* 0x01 - 0x03 are defined in linux/mman.h */ #define MAP_TYPE 0x0f /* Mask for type of mapping */ @@ -47,62 +40,6 @@ #define MCL_FUTURE 2 /* lock all future mappings */ #define MCL_ONFAULT 4 /* lock all pages that are faulted in */ -/* - * Flags for mlock - */ -#define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ - -/* - * Flags for msync - */ -#define MS_ASYNC 1 /* sync memory asynchronously */ -#define MS_INVALIDATE 2 /* invalidate the caches */ -#define MS_SYNC 4 /* synchronous memory sync */ - -#define MADV_NORMAL 0 /* no further special treatment */ -#define MADV_RANDOM 1 /* expect random page references */ -#define MADV_SEQUENTIAL 2 /* expect sequential page references */ -#define MADV_WILLNEED 3 /* will need these pages */ -#define MADV_DONTNEED 4 /* don't need these pages */ - -/* common parameters: try to keep these consistent across architectures */ -#define MADV_FREE 8 /* free pages only if memory pressure */ -#define MADV_REMOVE 9 /* remove these pages & resources */ -#define MADV_DONTFORK 10 /* don't inherit across fork */ -#define MADV_DOFORK 11 /* do inherit across fork */ - -#define MADV_MERGEABLE 12 /* KSM may merge identical pages */ -#define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ - -#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ -#define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ - -#define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, - overrides the coredump filter bits */ -#define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag */ - -#define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */ -#define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */ - -#define MADV_COLD 20 /* deactivate these pages */ -#define MADV_PAGEOUT 21 /* reclaim these pages */ - -#define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */ -#define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */ - -#define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */ - -#define MADV_COLLAPSE 25 /* Synchronous hugepage collapse */ - -#define MADV_HWPOISON 100 /* poison a page for testing */ -#define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */ - -/* compatibility flags */ -#define MAP_FILE 0 - -#define PKEY_DISABLE_ACCESS 0x1 -#define PKEY_DISABLE_WRITE 0x2 -#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ - PKEY_DISABLE_WRITE) +#include <asm-generic/mman-common.h> #endif /* _ASM_MMAN_H */ diff --git a/arch/parisc/include/uapi/asm/mman.h b/arch/parisc/include/uapi/asm/mman.h index 80f4a55763a0..1cd5d816d4cf 100644 --- a/arch/parisc/include/uapi/asm/mman.h +++ b/arch/parisc/include/uapi/asm/mman.h @@ -2,10 +2,13 @@ #ifndef __PARISC_MMAN_H__ #define __PARISC_MMAN_H__ + #define PROT_READ 0x1 /* page can be read */ #define PROT_WRITE 0x2 /* page can be written */ #define PROT_EXEC 0x4 /* page can be executed */ +#ifndef PROT_SEM /* different on mips and xtensa */ #define PROT_SEM 0x8 /* page may be used for atomic ops */ +#endif /* 0x10 reserved for arch-specific use */ /* 0x20 reserved for arch-specific use */ #define PROT_NONE 0x0 /* page can not be accessed */ diff --git a/arch/xtensa/include/uapi/asm/mman.h b/arch/xtensa/include/uapi/asm/mman.h index ad6bc56a7aef..e713b8dc8587 100644 --- a/arch/xtensa/include/uapi/asm/mman.h +++ b/arch/xtensa/include/uapi/asm/mman.h @@ -11,19 +11,11 @@ * Copyright (C) 1995 by Ralf Baechle * Copyright (C) 2001 - 2005 Tensilica Inc. */ - #ifndef _XTENSA_MMAN_H #define _XTENSA_MMAN_H -#define PROT_READ 0x1 /* page can be read */ -#define PROT_WRITE 0x2 /* page can be written */ -#define PROT_EXEC 0x4 /* page can be executed */ /* 0x8 reserved for arch-specific use */ #define PROT_SEM 0x10 /* page may be used for atomic ops */ -/* 0x20 reserved for arch-specific use */ -#define PROT_NONE 0x0 /* page can not be accessed */ -#define PROT_GROWSDOWN 0x01000000 /* mprotect flag: extend change to start of growsdown vma */ -#define PROT_GROWSUP 0x02000000 /* mprotect flag: extend change to end of growsup vma */ /* 0x01 - 0x03 are defined in linux/mman.h */ #define MAP_TYPE 0x0f /* Mask for type of mapping */ @@ -54,62 +46,6 @@ #define MCL_FUTURE 2 /* lock all future mappings */ #define MCL_ONFAULT 4 /* lock all pages that are faulted in */ -/* - * Flags for mlock - */ -#define MLOCK_ONFAULT 0x01 /* Lock pages in range after they are faulted in, do not prefault */ - -/* - * Flags for msync - */ -#define MS_ASYNC 1 /* sync memory asynchronously */ -#define MS_INVALIDATE 2 /* invalidate the caches */ -#define MS_SYNC 4 /* synchronous memory sync */ - -#define MADV_NORMAL 0 /* no further special treatment */ -#define MADV_RANDOM 1 /* expect random page references */ -#define MADV_SEQUENTIAL 2 /* expect sequential page references */ -#define MADV_WILLNEED 3 /* will need these pages */ -#define MADV_DONTNEED 4 /* don't need these pages */ - -/* common parameters: try to keep these consistent across architectures */ -#define MADV_FREE 8 /* free pages only if memory pressure */ -#define MADV_REMOVE 9 /* remove these pages & resources */ -#define MADV_DONTFORK 10 /* don't inherit across fork */ -#define MADV_DOFORK 11 /* do inherit across fork */ - -#define MADV_MERGEABLE 12 /* KSM may merge identical pages */ -#define MADV_UNMERGEABLE 13 /* KSM may not merge identical pages */ - -#define MADV_HUGEPAGE 14 /* Worth backing with hugepages */ -#define MADV_NOHUGEPAGE 15 /* Not worth backing with hugepages */ - -#define MADV_DONTDUMP 16 /* Explicity exclude from the core dump, - overrides the coredump filter bits */ -#define MADV_DODUMP 17 /* Clear the MADV_DONTDUMP flag */ - -#define MADV_WIPEONFORK 18 /* Zero memory on fork, child only */ -#define MADV_KEEPONFORK 19 /* Undo MADV_WIPEONFORK */ - -#define MADV_COLD 20 /* deactivate these pages */ -#define MADV_PAGEOUT 21 /* reclaim these pages */ - -#define MADV_POPULATE_READ 22 /* populate (prefault) page tables readable */ -#define MADV_POPULATE_WRITE 23 /* populate (prefault) page tables writable */ - -#define MADV_DONTNEED_LOCKED 24 /* like DONTNEED, but drop locked pages too */ - -#define MADV_COLLAPSE 25 /* Synchronous hugepage collapse */ - -#define MADV_HWPOISON 100 /* poison a page for testing */ -#define MADV_SOFT_OFFLINE 101 /* soft offline page for testing */ - -/* compatibility flags */ -#define MAP_FILE 0 - -#define PKEY_DISABLE_ACCESS 0x1 -#define PKEY_DISABLE_WRITE 0x2 -#define PKEY_ACCESS_MASK (PKEY_DISABLE_ACCESS |\ - PKEY_DISABLE_WRITE) +#include <asm-generic/mman-common.h> #endif /* _XTENSA_MMAN_H */ diff --git a/include/uapi/asm-generic/mman-common.h b/include/uapi/asm-generic/mman-common.h index 8d66d2dabaa8..2911dd14ef2a 100644 --- a/include/uapi/asm-generic/mman-common.h +++ b/include/uapi/asm-generic/mman-common.h @@ -10,7 +10,9 @@ #define PROT_READ 0x1 /* page can be read */ #define PROT_WRITE 0x2 /* page can be written */ #define PROT_EXEC 0x4 /* page can be executed */ +#ifndef PROT_SEM /* different on mips and xtensa */ #define PROT_SEM 0x8 /* page may be used for atomic ops */ +#endif /* 0x10 reserved for arch-specific use */ /* 0x20 reserved for arch-specific use */ #define PROT_NONE 0x0 /* page can not be accessed */ -- 2.39.2
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